body{
    font-family: 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    font-weight: 300;
    color: #fff;
    line-height: 30px;
    text-align: center;
    background-image: url(../img/img.png);
    background-size: cover;
}
.login-content{
    margin: 0 auto;
    width: 30%;
    padding-top: 200px;
}
.login-promt{
    padding: 20px;
    font-size: 25px;
    font-weight: 500;
}
.layui-form-label i{
    font-size: 25px;
}